Difference between revisions of "GlueX Level-3 Trigger Meeting, May 19, 2016"
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Justin's collaboration meeting talks: | Justin's collaboration meeting talks: | ||
− | * [ | + | * [https://halldweb.jlab.org/DocDB/0022/002220/001/level3_collabMtg6.3.13_v2.pdf June 2013] |
− | * [ | + | * [https://halldweb.jlab.org/DocDB/0023/002336/003/stevens_level3trigger_10.4.13.pdf October 2013] |
− | * [ | + | * [https://halldweb.jlab.org/DocDB/0024/002402/001/stevens_level3trigger_2.20.14.pdf February 2014] |
− | * [ | + | * [https://halldweb.jlab.org/DocDB/0024/002476/001/stevens_level3trigger_5.12.14.pdf May 2014] |
− | * [ | + | * [https://halldweb.jlab.org/DocDB/0025/002575/001/stevens_level3trigger_10.3.14.pdf October 2014] |
=Minutes= | =Minutes= | ||
+ | Attendees: David L., Adesh S., Justin S., Mike W., Cristiano F. | ||
+ | |||
+ | == Schedule == | ||
+ | * L3 is not a requirement for the Fall 2016 and Spring 2017 runs. We will schedule some commissioning time during these runs | ||
+ | * Current schedule has no Hall-D running in Fall 2017 | ||
+ | * Expect to have fully deployed L3 system in use for Fall 2018 run | ||
+ | |||
+ | == Discussion == | ||
+ | * Primary goal of L3 is to reduce/eliminate events with E<sub>γ</sub> < 7GeV | ||
+ | * Justin briefly reviewed his slides from Oct. 2014 GlueX collaboration meeting to remind us what has been done and where we left it | ||
+ | * Plan is to implement MVA (=multivariate analysis) with focus on BDT | ||
+ | ** We will start with the [http://tmva.sourceforge.net/ TMVA] package that is integrated into [https://root.cern.ch/ ROOT] | ||
+ | ** May eventually move to [http://arxiv.org/abs/1210.6861 other algorithms] developed specifically for this type of triggering | ||
+ | * Two approaches: | ||
+ | *# Detailed Monte Carlo where all truth information is available | ||
+ | *# Real data from Spring 2016 run where events can be flagged as "reconstructable" | ||
+ | ** Both will be pursued. Simulation will necessarily need to improve to meet physics goals of GlueX and L3 will benefit from that | ||
+ | * Simulated data set being generated for GlueX ("sim1") will not be sufficient for L3 study since it has a lower bound of E<sub>γ</sub> = 4GeV. We will need to generate another with energies down to π threshold | ||
+ | ** L3 simulated data set will match the conditions of the "first priority" data as determined by Analysis Working Group. Specifically, runs 11347-11555 (see [https://halldweb.jlab.org/wiki-private/index.php/Spring_2016_Dataset_Summary here for details]) | ||
+ | ** Adesh will put together wiki page with simulation specifications and status | ||
+ | * Mike noted that another important piece of information will be the CPU cost of various algorithms that may be used as input to the BDT | ||
+ | ** Cristiano will start looking at this and documenting it. | ||
+ | ** This may prompt some optimizations of code where L3 would benefit so the benchmarking tools developed are expected to be reused multiple times | ||
+ | ** Some preliminary work in this area was [https://halldweb.jlab.org/DocDB/0030/003004/001/20160509_lawrence_online.pdf shown at the May Collab. Meeting] | ||
+ | |||
+ | == Future Meetings == | ||
+ | * We will have future meetings bi-weekly on Fridays at 11:00am. This is the same time as the bi-weekly DIRC meetings but out of phase by a week to make it convenient for those who attend both meetings | ||
+ | * Next meeting will be Friday May 27 |
Latest revision as of 12:39, 14 March 2017
Contents
Meeting Info.
Meeting Time And Location
16:00 EST (JLab time)
CC A110
Connecting
You can connect using BlueJeans Video conferencing (ID: 949 429 419). (Click "Expand" to the right for details -->):
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Agenda
This is initial meeting will be organizational.
Informational Links:
Justin's collaboration meeting talks:
Minutes
Attendees: David L., Adesh S., Justin S., Mike W., Cristiano F.
Schedule
- L3 is not a requirement for the Fall 2016 and Spring 2017 runs. We will schedule some commissioning time during these runs
- Current schedule has no Hall-D running in Fall 2017
- Expect to have fully deployed L3 system in use for Fall 2018 run
Discussion
- Primary goal of L3 is to reduce/eliminate events with Eγ < 7GeV
- Justin briefly reviewed his slides from Oct. 2014 GlueX collaboration meeting to remind us what has been done and where we left it
- Plan is to implement MVA (=multivariate analysis) with focus on BDT
- We will start with the TMVA package that is integrated into ROOT
- May eventually move to other algorithms developed specifically for this type of triggering
- Two approaches:
- Detailed Monte Carlo where all truth information is available
- Real data from Spring 2016 run where events can be flagged as "reconstructable"
- Both will be pursued. Simulation will necessarily need to improve to meet physics goals of GlueX and L3 will benefit from that
- Simulated data set being generated for GlueX ("sim1") will not be sufficient for L3 study since it has a lower bound of Eγ = 4GeV. We will need to generate another with energies down to π threshold
- L3 simulated data set will match the conditions of the "first priority" data as determined by Analysis Working Group. Specifically, runs 11347-11555 (see here for details)
- Adesh will put together wiki page with simulation specifications and status
- Mike noted that another important piece of information will be the CPU cost of various algorithms that may be used as input to the BDT
- Cristiano will start looking at this and documenting it.
- This may prompt some optimizations of code where L3 would benefit so the benchmarking tools developed are expected to be reused multiple times
- Some preliminary work in this area was shown at the May Collab. Meeting
Future Meetings
- We will have future meetings bi-weekly on Fridays at 11:00am. This is the same time as the bi-weekly DIRC meetings but out of phase by a week to make it convenient for those who attend both meetings
- Next meeting will be Friday May 27